How to add reference information in Visual Studio 2017?

Question

On some occasions seeing some colleagues using VS 2017, and even when I used one set up by someone else, I noticed that there is information about references to a class.

In the example below, see how you are today:

public class Email
{
    public string EnderecoEmail { get; set; }
}

And below, as I would like you to stay:

0 references
public class Email
    {
        0 references
        public string EnderecoEmail { get; set; }
    }

How do I set up my VS to display this type of information?

Answer 1

Tools → Options → Text Editor → All Languages → CodeLens

or

Ferramentas → Opções → Editor de Texto → Todos os Idiomas → CodeLens

Codelens is not available in the Community Edition. However, Codelens can be installed in Visual Studio 2015 when installing SSDT.

Reference: https://stackoverflow.com/questions/42796941/visual-studio-2017-display-method-references